body {
  background-color: red;
}
/*多行注释
 CSS注释会被解析到css文件中
*/
.box {
  width: 100px;
  height: 100px;
  background-color: blue;
}
.box1 {
  width: 100px;
}
.box1 {
  background-image: url("box1/1.png");
}
.box {
  width: 200px;
}
.box {
  color: #bfbfbf;
  background-color: #bfbfbf;
}
